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Cobourg Marina, considered by many to be one of the jewels of Lake Ontario, is conveniently located on the North shore of Lake Ontario between Toronto and Kingston.  Whether you are looking for a relaxing stay to take in the sights and sounds of our historic community, a stopover to restock supplies, or simply a safe haven to get off the lake, you will be greeted with a friendly welcome by our professional staff.

Clean Marine

Cobourg Marina and Harbour is proud to be striving towards Eco-Excellence in pollution reduction. We received 5 Green Leaf Anchors in our first year!

In October 2020, Cobourg joined the Great Lakes Plastic Cleanup, with cleanup and capture technology installed thanks to the support of Ontario's Ministry of the Environment, Conservation and Parks. 


The average size of the catch at Cobourg: this is how many individual pieces of litter were collected in a 24-hour-period by the devices at the marina!


Litter comes in many shapes, sizes and varieties. Here's what we found at Cobourg this season:

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Large fragments

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Large film pieces

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Small fragments


Small pellets

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Large foam pieces


Large food wrappers

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Small foam pieces

We also found intact items in the bins - including cigar tips, straws, masks, coffee cup lids and bottle caps!